CVE-2026-19983

HIGH 8.3

GL.iNet XE3000 NAS Command Service gl_nas_sys os command injection

CVSS Score

8.3

EPSS Score

0.0%

EPSS Percentile

0th

A vulnerability was detected in GL.iNet A1300, AX1800, AXT1800, MT2500, MT3000, MT6000, X3000 and XE3000 4.8.x. This issue affects some unknown processing of the file /usr/bin/gl_nas_sys of the component NAS Command Service. The manipulation results in os command injection. The attack may be launched remotely. Upgrading to version 4.9.0 is capable of addressing this issue. It is suggested to upgrade the affected component. The vendor explains: "After our investigation, we have confirmed that the vulnerability described (...) does indeed exist."

CWE	CWE-78 CWE-77
Vendor	gl.inet
Product	a1300
Published	Aug 17, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L/E:X/RL:O/RC:C

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

GL.iNet / A1300

4.8.*

GL.iNet / AX1800

4.8.*

GL.iNet / AXT1800

4.8.*

GL.iNet / MT2500

4.8.*

GL.iNet / MT3000

4.8.*

GL.iNet / MT6000

4.8.*

GL.iNet / X3000

4.8.*

GL.iNet / XE3000

4.8.*

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/391165 vuldb.com: https://vuldb.com/vuln/391165/cti vuldb.com: https://vuldb.com/cve/CVE-2026-19983 vuldb.com: https://vuldb.com/submit/873919 github.com: https://github.com/gl-inet/CVE-issues/blob/main/4.0.0/NAS%20Host-header%20bypass%20to%20unauthenticated%20root%20RCE.md

Credits

🔍 GLiNet (VulDB User) VulDB CNA Team